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WILLIAM HARRIS AND DANIEL HALL, 0F CHICAGO, ILLINOIS.

Letters Patent No. 103,741, dared May 31, 1870.

IMPROVEMENT EN APPAFLAEUS FOR ENIMELING SHEET-IRON.

The Echodnle :sinned to in those Letters Patent and makin-L: part of the same.

To all whom it may concern:

Be it known that we, WILLEM; Hamas and DAN- mt. HALL, of Chicago, in the county of Cook and State of Illinois, have invented an Apparatus for Enameling Sheetd'ron, and we do hereby declare that the following is a full and exact description thereof', which will enable those skilled in the art to make and use the\ samc, reference being had to the accompanying drawing and letters marked thereon making a part of this specication, in which Figure 1 is a perspective represent-ation of our improved apparatus for enameling sheet-iron.

Figure 2, a longitudinal section of the same.

. Figure 3, au end view of the rolling part.

Figure 4, a view of the adjusting lever.

This invention consists of two removable furnaces and a rolling device, whereby sheet-iron, when being rerollcd and enameled, may be constantly subjected t-o a nearly uniform heat.

The rollingl device consists of the ordinary rollers, and, in addition t0 them, an enameling roller, whose substance is, by contact and friction, distributed to one ofthe plating-rollers, from which it is laid on the sheet-metal plate as it passes through the'apparatus, gas-pipes being used in addition to the fnrnaces, in order that lighted gas may he nscd to provide heat atsuch places as tho furnaces are defective in that respect, other devices being used for the convenience ol' handling the metal plate, as the whole is hereiuafter fully described.

A represents an open furnace, mounted on wheels d, andprorided with a grated fire-box, E E, Src., and an ordinary ashpit, P.

The sides of this furnace project above the gratos E, and attached to them longitudinally are gas-pipes C, which are .provided with a series of burners, D, and projecting through said sides, in order that a gas-flame may be brought over the sheet-iron as it is passing between the rollers It S.

An apron, M, attached to the end of the furnace,- is arranged to fill the space between the furnace and rollers, so that the sheet metal may have a suitable guide in its forward movement.

ff is a. strong frame, having a suitable support on a floor or foundation, and supporting the plating-rollers R S, a composition-distributing roller, T, and a guide, W n' There is nothing claimed to bey new as to the roll ers R S, but a roller, T, consisting of a compound of zinc and copper, in combination with rollers It S, is considered novel, inasmuch as by friction, a portion of its periphery is constantly distributed on the roller S, with which it comes in contact, and from the roller S laid on the sheet metal as it passes through between t-he rollers R S.

The roller T has bearings h projecting inward from the frame ff, as shown in fig. 3, and it is caused to bear with suitable force against. the roliePS, by means of set-screws n u, same figure.

Below the roller 'I, and between thc rollers R S, is arranged a platform or guide, W x, which guides the sheet metal into the furnace B.

This guide, working in vertical grooves made in the inner side of the frame f f, may bc raised or lowered, as the onse may require.

The furnace B has a construction similar to furnace A, except that it is covered, and has a hotaair chamber, m, over Ithe gratos N, shown in the section at iig. 2, said gratcs having the `same form as those "shown atld, fig. l, and beneath them is an ash-box,

O, similar to ash-box I) in furnaceA.

In the front of rollers R S are gas-pipes V, vwhich serve to keep the rollers np to the desired heat. And on either side of the furnace B is agas-pipe, H, which is provided with a series of barriers, projecting inwardly, similarly to the burners at D in furnaceA A.

The pipes H communicate with vertical pipes 1, which communicate with trunnion pipes J, so arranged that, while they conduct the gas to pipes H, they will serve to support the furnace B instead .of using the wheels l l, il'dcsired.

The operation is as follows:

After the fires have'bcen properly started, and gas lighted, the sheet of iron, of any 'desired thickness, is placed on the gratos E, and, when properly heated, is run through between the rollers R S, into furnace B and onto gratos N.,

The end of thcl sheet adjoining tho rollers is then lifted up, after opening a door, b, Iig. 2, carried back over roller S, and placed again outhe grates E The device for liftin up said sheet consists of a stirrup-lcver, L v, whic is pivoted to the furnace B at K, and` is so turned up at c as to come near the the sheet-iron.

To use said lever, bear down upon it at L with thc foot.

During the cntirc operation care should hc used not to have the roller T bear too hard against the roller S, as too much metallic enamel will be transferred to the sheet.

This invention, for making sheet. metal similar to Russia iron, is found by experiments to be of great value, as the enamel pnt on by it is smooth, glossy, and docs not scale.

When, however, the distributing-roller T does not dispense cnanicl enough, a stationary friction distrbuting-plnte or bar, W, is placed against the roller R. v

Having thus described our invention,

\Vhnt we claim, and desire to secure hy .Letters Patent of the United tates, is-

l. Broadly, in manufacturing enameled iron, the use of the composition roller T, composed of zinc and copper, or their equivalents, in combination with rollers R S, and with or vfithout bar NV, when used with any suitable heating apparatus, as set forth.

2. The combination of the heating-furnaces A B,

provided with gas-pipes O V H J I, and suitable burners D, as and for the purpose set forth.

3. The stilrnp-lever, pivote-d to the furnace B, when used in combination with the furnaces A B and rollers R S, to assist in transferring sheet metal from one furnace to the other, as set forth.

WILLIAM HARRIS. DANIEL HALL.

Witnesses:

E. E. GIBSON, G. L. OHAHN. 

